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TOMOYO Linux Cross Reference
Linux/arch/arm/include/asm/firmware.h

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  1 /*
  2  * Copyright (C) 2012 Samsung Electronics.
  3  * Kyungmin Park <kyungmin.park@samsung.com>
  4  * Tomasz Figa <t.figa@samsung.com>
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License version 2 as
  8  * published by the Free Software Foundation.
  9  */
 10 
 11 #ifndef __ASM_ARM_FIRMWARE_H
 12 #define __ASM_ARM_FIRMWARE_H
 13 
 14 #include <linux/bug.h>
 15 
 16 /*
 17  * struct firmware_ops
 18  *
 19  * A structure to specify available firmware operations.
 20  *
 21  * A filled up structure can be registered with register_firmware_ops().
 22  */
 23 struct firmware_ops {
 24         /*
 25          * Inform the firmware we intend to enter CPU idle mode
 26          */
 27         int (*prepare_idle)(void);
 28         /*
 29          * Enters CPU idle mode
 30          */
 31         int (*do_idle)(void);
 32         /*
 33          * Sets boot address of specified physical CPU
 34          */
 35         int (*set_cpu_boot_addr)(int cpu, unsigned long boot_addr);
 36         /*
 37          * Boots specified physical CPU
 38          */
 39         int (*cpu_boot)(int cpu);
 40         /*
 41          * Initializes L2 cache
 42          */
 43         int (*l2x0_init)(void);
 44 };
 45 
 46 /* Global pointer for current firmware_ops structure, can't be NULL. */
 47 extern const struct firmware_ops *firmware_ops;
 48 
 49 /*
 50  * call_firmware_op(op, ...)
 51  *
 52  * Checks if firmware operation is present and calls it,
 53  * otherwise returns -ENOSYS
 54  */
 55 #define call_firmware_op(op, ...)                                       \
 56         ((firmware_ops->op) ? firmware_ops->op(__VA_ARGS__) : (-ENOSYS))
 57 
 58 /*
 59  * register_firmware_ops(ops)
 60  *
 61  * A function to register platform firmware_ops struct.
 62  */
 63 static inline void register_firmware_ops(const struct firmware_ops *ops)
 64 {
 65         BUG_ON(!ops);
 66 
 67         firmware_ops = ops;
 68 }
 69 
 70 #endif
 71 

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